| 摘要 |
An electrical discharge machining (EDM) system comprising: a mechanical unit constituting an EDM machine tool, a power-supply unit for providing a succession of machining pulses controlledly to an EDM gap formed between a tool electrode and a workpiece in the mechanical unit, a machining-fluid supply unit for delivering a machining fluid controlledly to the EDM gap, an electrical control unit disposed remote from the EDM gap for controlling at least one of the mechanical unit, the power-supply unit and the machining-fluid supply unit, and a gap monitoring electrical unit disposed in the vicinity of the EDM gap in the mechanical unit for providing an electrical signal representing a gap discharge condition, the gap monitoring unit having at its output an electro-optical transducer, the control circuit unit having at its input an opto-electrical transducer, the electro-optical transducer and the opto-electrical transducer being interconnected by an optical transmission line.
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